<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <button type="button" onclick="popWindows()">点击按钮连续弹窗5次</button>
    <script>
/*
4.	点击按钮连续弹窗5次
<div class="toggle">
    <button type=”button”>循环5次弹窗</button>
</div>
*/
    function popWindows() {
        for (let i = 0; i < 5; i++) {
            alert("第" + (i + 1) + "次弹窗");
        }
    }
    </script>
</body>
</html>